<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <div>
            <span>姓名:</span>
            <input type="text" class="form-control" placeholder="请输入名字" v-model.trim="newItem.name"  />
        </div>
        <div>
            <span>年龄:</span>
            <input type="text" class="form-control" placeholder="请输入年纪" v-model.number="newItem.age" />
        </div>
        <div>
            <span>性别:</span>
            <select v-model="newItem.gender">
                <option value="男">男</option>
                <option value="女">女</option>
            </select>
        </div>
        <div>
            <button @click="addOrUpdate">添加/修改</button>
        </div>
        <div>
            <table border="1" cellpadding="10" cellspacing="0">
                <tr>
                    <th>序号</th>
                    <th>姓名</th>
                    <th>年龄</th>
                    <th>性别</th>
                    <th>操作</th>
                </tr>
                <tr v-for="(item,index) in list" :key="index">
                    <td>{{index +1}}</td>
                    <td>{{item.name}}</td>
                    <td>{{item.age}}</td>
                    <td>{{item.gender}}</td>
                    <td>
                        <button @click="remove(index)">删除</button>
                        <button @click="edit(index)">编辑</button>
                    </td>
                </tr>
            </table>
        </div>
    </div>
    <script src="./vue.js"></script>
    <script>
        const app = new Vue({
            el: '#app',
            data: {
                list: [
                    { name: "Tom", age: 19, gender: '男' },
                    { name: "Jone", age: 21, gender: '女' },
                    { name: "小李", age: 18, gender: '男' },
                ],
                newItem: {
                    name: '',
                    age: null,
                    gender: '男'
                },
                isEditMode: false,
                editIndex: null
            },
            methods: {
                addOrUpdate() {
                    if (!this.newItem.name || this.newItem.age === null) {
                        alert('请输入完整信息');
                        return;
                    }

                    if (this.isEditMode) {
                        // 更新现有项
                        this.list[this.editIndex] = { ...this.newItem };
                        this.isEditMode = false;
                        this.editIndex = null;
                    } else {
                        // 添加新项
                        this.list.push({ ...this.newItem });
                    }

                    // 重置newItem
                    this.newItem = {
                        name: '',
                        age: null,
                        gender: '男'
                    };
                },
                remove(index) {
                    this.list.splice(index, 1);
                },
                edit(index) {
                    this.newItem = { ...this.list[index] };
                    this.isEditMode = true;
                    this.editIndex = index;
                }
            }
        })
    </script>
</body>

</html>